Hourly Weather Forecast - Mercer Island, WA

12 AM
35°F
10%
1mph
NNE
Partly Cloudy
Humidity
90%
Feels like
35°F
Dew Point
32°F
1 AM
35°F
10%
1mph
N
Partly Cloudy
Humidity
91%
Feels like
35°F
Dew Point
32°F
2 AM
34°F
10%
1mph
NNE
Partly Cloudy
Humidity
91%
Feels like
34°F
Dew Point
32°F
3 AM
34°F
10%
1mph
NNE
Partly Cloudy
Humidity
92%
Feels like
34°F
Dew Point
31°F
4 AM
33°F
10%
1mph
NNE
Partly Cloudy
Humidity
91%
Feels like
33°F
Dew Point
31°F
5 AM
33°F
10%
1mph
NNE
Partly Cloudy
Humidity
91%
Feels like
33°F
Dew Point
31°F
6 AM
33°F
10%
1mph
NNE
Partly Cloudy
Humidity
90%
Feels like
33°F
Dew Point
31°F
7 AM
34°F
10%
1mph
NNE
Partly Cloudy
Humidity
90%
Feels like
34°F
Dew Point
31°F
7:56 AM
8 AM
34°F
10%
1mph
NE
Partly Cloudy
Humidity
89%
Feels like
34°F
Dew Point
31°F
9 AM
36°F
10%
1mph
NE
Partly Cloudy
Humidity
87%
Feels like
36°F
Dew Point
32°F
10 AM
38°F
10%
1mph
NE
Partly Cloudy
Humidity
83%
Feels like
38°F
Dew Point
33°F
11 AM
40°F
0%
1mph
NNE
Partly Cloudy
Humidity
80%
Feels like
40°F
Dew Point
34°F
12 PM
42°F
0%
1mph
N
Partly Cloudy
Humidity
77%
Feels like
42°F
Dew Point
35°F
1 PM
43°F
0%
1mph
N
Partly Cloudy
Humidity
75%
Feels like
43°F
Dew Point
36°F
2 PM
44°F
0%
1mph
N
Partly Cloudy
Humidity
75%
Feels like
44°F
Dew Point
36°F
3 PM
43°F
0%
1mph
N
Partly Cloudy
Humidity
79%
Feels like
43°F
Dew Point
37°F
4 PM
42°F
0%
1mph
N
Partly Cloudy
Humidity
82%
Feels like
42°F
Dew Point
37°F
4:25 PM
5 PM
41°F
0%
1mph
NNE
Partly Cloudy
Humidity
84%
Feels like
41°F
Dew Point
37°F
6 PM
40°F
0%
1mph
NE
Partly Cloudy
Humidity
85%
Feels like
40°F
Dew Point
36°F
7 PM
40°F
0%
1mph
NE
Partly Cloudy
Humidity
86%
Feels like
40°F
Dew Point
36°F
8 PM
39°F
0%
1mph
NE
Partly Cloudy
Humidity
87%
Feels like
39°F
Dew Point
36°F
9 PM
38°F
0%
1mph
NE
Partly Cloudy
Humidity
88%
Feels like
38°F
Dew Point
35°F
10 PM
38°F
0%
1mph
ENE
Mostly Cloudy
Humidity
89%
Feels like
38°F
Dew Point
35°F
11 PM
38°F
0%
1mph
ENE
Mostly Cloudy
Humidity
90%
Feels like
38°F
Dew Point
35°F

Snow and Ice Forecast Through Monday

Heavy Snow and Icing from Midwest to New England

A winter storm will deliver snow and significant icing from the Midwest to New England.

Today's Weather Outlook

Today's Weather Outlook

Satellite image of Hurricane Melissa

2025 Year in Review: Powerful Hurricanes in the Atlantic

A frame from an automated video of a tornado and its mesocyclone that derailed multiple train cars near Enderlin, North Dakota and destroyed multiple homes on June 20, 2025. (ChrisWx via Wikimedia Commons)

2025 Year in Review: Extreme Weather - January through June

Photos and videos from the Palisades Fire that started in the City of Los Angeles, January 8, 2025. (CAL FIRE_Official via Wikimedia Commons)

2025 Year in Review: Billion Dollar Disasters - The California Wildfires

Hurricane Erick at its peak intensity before making landfall on Guerrero, Mexico on June 19, 2025 (NOAA/Wikimedia Commons)

2025 Year in Review: Active Tropical Season for The Pacific

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide